Home / 209,966.30-315,152.45-198,587.11

Finding the Fourth Proportional to 209,966.30, 315,152.45 and 198,587.11

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Solution

The fourth proportional to 209,966.30, 315,152.45 and 198,587.11 is: 298,072.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,966.30 : 315,152.45 = 198,587.11 : x
  2. Step 2: Convert to fraction form
    209,966.30/315,152.45 = 198,587.11/x
  3. Step 3: Cross multiply
    209,966.30x = 315,152.45 × 198,587.11
  4. Step 4: Simplify right side
    209,966.30x = 62,585,213,261.98
  5. Step 5: Solve for x
    x = 62,585,213,261.98/209,966.30
  6. Step 6: Final answer
    x = 298,072.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.